Items

• [D8533ZAA], Letter from Metropolitan Telephone and Telegraph Co, John H Cahill to Electric Tube Co, December 21st, 1885
  1885-12-21
• [D8533ZAB], Letter from Metropolitan Telephone and Telegraph Co, John H Cahill to Samuel Insull, December 22nd, 1885
  1885-12-22
• [D8805ADN], Letter from Metropolitan Telephone and Telegraph Co, William H Eckert to Thomas Alva Edison, June 12th, 1888
  1888-06-12
• [D8805AEZ], Letter from William H Eckert, Metropolitan Telephone and Telegraph Co to Thomas Alva Edison, July 26th, 1888
  1888-07-26